Finding the Fourth Proportional to 1,251.68, 1,876.56 and 634.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.68 : 1,876.56 = 634.72 : x
2. Step 2: Convert to fraction form
   1,251.68/1,876.56 = 634.72/x
3. Step 3: Cross multiply
   1,251.68x = 1,876.56 × 634.72
4. Step 4: Simplify right side
   1,251.68x = 1,191,090.16
5. Step 5: Solve for x
   x = 1,191,090.16/1,251.68
6. Step 6: Final answer
   x = 951.59